Dahlia, circumnutation of young leaves, 244-246
Dalea alopecuroides, leaflets depressed at night, 354
Darkness, effect of, on the movement of leaves, 407
Darlingtonia Californica, its leaves or pitchers apheliotropic, 450, n.
Darwin, Charles, on Maurandia semperflorens, 225; on the Swedish turnip, 230, n.; movements of climbing plants, 266, 271; the heliotropic movement of the tendrils of Bignonia capreolata, 433; revolution of climbing plants, 451; on the curling of a tendril, 570 --, Erasmus, on the peduncles of Cyclamens, 433 --, Francis, on the radicle of Sinapis alba, 486; on Hygroscopic seeds, 489, n.
Datura stramonium, nocturnal movement of cotyledons, 298
Delpino, on cotyledons of Chaerophyllum and Corydalis, 96, n.
Delphinium nudicaule, mode of breaking through the ground, 80 --, confluent petioles of two cotyledons, 553
Desmodium gyrans, movement of leaflets, 257, n. --, position of leaves at night, 285 --, sleep of leaves, not of cotyledons, 314 --, circumnutation and nycti- [page 579]
DESMODIUM--EUCALYPTUS
tropic movement of leaves, 358-360 Desmodium gyrans, movement of lateral leaflets, 361 --, jerking of leaflets, 362 -- nyctitropic movement of petioles, 400, 401 --, diameter of plant at night, 402 --, lateral movement of leaves, 404 --, zigzag movement of apex of leaf, 405 --, shape of lateral leaflet, 416 --, vespertilionis, 364, n.
Deutzia gracilis, circumnutation of stem, 205
Diageotropism, 5; or transverse-geotropism, 520
Diaheliotropism, 5; or Transversal-Heliotropismus of Frank, 419; influenced by epinasty, 439; by weight and apogeotropism, 440
Dianthus caryophyllus, 230 --, circumnutation of young leaf, 231, 269
Dicotyledons, circumnutation widely spread among, 68
Dionoea, oscillatory movements of leaves, 261, 271
Dionoea muscipula, circumnutation of young expanding leaf, 239, 240 --, closure of the lobes and circumnutation of a full-grown leaf, 241 --, oscillations of, 242-244
Diurnal sleep, 419
Drosera Capensis, structure of first-formed leaves, 414 -- rotundifolia, movement of young leaf, 237, 238 --, of the tentacles, 239 --, sensitiveness of tentacles, 261 --, shape of leaves, 414 --, leaves not heliotropic, 450 --, leaves circumnutate largely, 454 --, sensitiveness of 570
Duchartre on Trephrosia cariboea, 354; on the nyctitropic movement of the Cassia, 369
Duval-Jouve, on the movements of Bryophyllum calycinum, 237; of the narrow leaves of the Gramineae, 413
Dyer, Mr. Thiselton, on the leaves of Crotolaria, 340; on Cassia floribunda, 369, n., on the absorbent hairs on the buried flower-heads of Trifolium subterraneum, 517
E.
Echeveria stolonifera, circumnutation of leaf, 237
Echinocactus viridescens, its rudimentary cotyledons, 97
Echinocystis lobata, movements of tendrils, 266 --, apogeotropism of tendrils, 510
Elfving, F., on the rhizomes of Sparganium ramosum, 189; on the diageotropic movement in the rhizomes of some plants, 521
Elymus arenareus, leaves closed during the day, 413
Embryology of leaves, 414
Engelmann, Dr., on the Quercus virens, 85
Epinasty, 5, 267
Epicotyl, or plumule, 5; manner of breaking through the ground, 77; emerges from the ground under the form of an arch, 553
Erythrina caffra, sleep of leaves, 367 -- corallodendron, movement of terminal leaflet, 367 -- crista-galli, effect of temperature on sleep of leaves, 318 --, circumnutation and nyctitropic movement of terminal leaflets, 367
Eucalyptus resinifera, circumnutation of leaves, 244 [page 580]
EUPHORBIA--GYMNOSPERMS
Euphorbia jacquineaeflora, nyctitropic movement of leaves, 388
F.
Flahault, M., on the rupture of seed-coats, 102-104, 106
Flower-stems, circumnutation of, 223-226
Fragaria Rosacea, circumnutation of stolon, 214-218
Frank, Dr. A. B., the terms Heliotropism and Geotropism, first used by him, 5, n.; radicles acted on by geotropism, 70, n.; on the stolons of Fragaria, 215; periodic and nyctitropic movements of leaves, 284; on the root-leaves of plants kept in darkness, 443; on pulvini, 485; on natural selection in connection with geotropism, heliotropism, etc., 570 --, on Transversal-Heliotropismus, 419
Fuchsia, circumnutation of stem, 205, 206
G.